Charge pump converter structure

Claim 2

An efficient charge pump inverter disposable between an electrical supply source and a load circuit, comprising: a switch network; a reservoir capacitor embedded in said switch network and arranged therein to be available to said load circuit for supplying current thereto; and a pump capacitor embedded in said switch network and having first and second leads; wherein said switch network is configured to connect said first pump capacitor lead to said supply source for conduction of charge therefrom in a first switching phase and to connect said second pump capacitor lead to said reservoir capacitor for conduction of charge thereto in a second switching phase; and said switch network is comprised of a plurality of MOS transistors wherein each of said transistors includes: a) a planar gate configured to define a two dimensional array of spaced apertures which are orthogonally arranged in rows and columns; b) a plurality of source regions; and c) a plurality of drain regions with each of said source regions and said drain regions positioned within a different one of said apertures and said source regions and said drain regions arranged in an alternating relationship along said rows and said columns so that current flows in a substantially radial pattern between each of said source regions and surrounding ones of said drain regions.

Claim 3

The charge pump of claim 1, wherein: said plurality of MOS transistors includes first, second, third and fourth serially-connected MOS transistors; and said pump capacitor is coupled across said second and third MOS transistors; and said fourth MOS transistor is coupled between said pump capacitor and said reservoir capacitor.

Claim 4

An efficient charge pump doubler disposable between an electrical supply source and a load circuit, comprising: a switch network; a reservoir capacitor embedded in said switch network and arranged therein to be available to said load circuit for supplying current thereto; and a pump capacitor embedded in said switch network and having first and second leads; wherein said switch network is configured to connect said first pump capacitor lead to said supply source for conduction of charge therefrom in a first switching phase and to connect said first pump capacitor lead to said reservoir capacitor and said second pump capacitor lead to said supply source in a second switching phase; and said switch network is comprised of a plurality of MOS transistors wherein each of said transistors includes: a) a planar gate configured to define a two dimensional array of spaced apertures which are orthogonally arranged in rows and columns; b) a plurality of source regions; and c) a plurality of drain regions with each of said source regions and said drain regions positioned within a different one of said apertures and said source regions and said drain regions arranged in an alternating relationship along said rows and said columns so that current flows in a substantially radial pattern between each of said source regions and surrounding ones of said drain regions.

Claim 5

An efficient charge pump doubler disposable between an electrical supply source and a load circuit, comprising: a switch network; a reservoir capacitor embedded in said switch network and arranged therein to be available to said load circuit for supplying current thereto; and a pump capacitor embedded in said switch network and having first and second leads; wherein said switch network is configured to connect said first pump capacitor lead to said supply source for conduction of charge therefrom in a first switching phase and to connect said first pump capacitor lead to said reservoir capacitor and said second pump capacitor lead to said supply source in a second switching phase; and said switch network is comprised of a plurality of MOS transistors wherein each of said transistors includes: a) a planar gate configured to define a two dimensional array of spaced apertures which are orthogonally arranged in rows and columns; b) a plurality of source regions; and c) a plurality of drain regions with each of said source regions and said drain regions positioned within a different one of said apertures and said source regions and said drain regions arranged in an alternating relationship along said rows and said columns so that current flows in a substantially radial pattern between each of said source regions and surrounding ones of said drain regions.

Claim 6

The charge pump of claim 3, wherein: said plurality of MOS transistors includes first, second, third and fourth serially-connected MOS transistors; and said pump capacitor is coupled across said second and third MOS transistors; and said fourth MOS transistor is coupled between said pump capacitor and said reservoir capacitor.